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TI-2026-42190 Aliases CVE-2026-58616GHSA-c7hh-86mm-w7m5

Copilot Chat (Microsoft Edge) Information Disclosure Vulnerability

Priority LOW 20CWE-362Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Required
Attack complexity
High
Impact type
Information disclosure
Confidentiality · integrity · availability
Low · Low · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from Microsoft.

Summary

Concurrent execution using shared resource with improper synchronization ('race condition') in Copilot Chat (Microsoft Edge) allows an authorized attacker to disclose information over a network.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00295 22nd percentileScored 2026-11-07
Fix Fixed Microsoft Edge (Chromium-based) (Microsoft): 152.0.4191.53Microsoft Edge for Android (Microsoft): 152.0.4191.52+4 more products

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
MicrosoftMicrosoft Edge (Chromium-based)1.0.0.0 to before 152.0.4191.53152.0.4191.53Patch availableCNA
MicrosoftMicrosoft Edge for Android1.0.0.0 to before 152.0.4191.52152.0.4191.52Patch availableCNA
MicrosoftMicrosoft Edge for iOS1.0.0.0 to before 152.0.4191.52152.0.4191.52Patch availableCNA
MicrosoftMicrosoft Edge for Linux1.0.0 to before 152.0.4191.52152.0.4191.52Patch availableCNA
MicrosoftMicrosoft Edge for MAC1.0.0.0 to before 152.0.4191.52152.0.4191.52Patch availableCNA
MicrosoftMicrosoft Edge for Windows1.0.0.0 to before 152.0.4191.52152.0.4191.52Patch availableCNA
  • Microsoft Edge (Chromium-based) VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.53 Fixed in 152.0.4191.53 Patch available CNA
  • Microsoft Edge for Android VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
  • Microsoft Edge for iOS VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
  • Microsoft Edge for Linux VendorMicrosoft Affected 1.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
  • Microsoft Edge for MAC VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA
  • Microsoft Edge for Windows VendorMicrosoft Affected 1.0.0.0 to before 152.0.4191.52 Fixed in 152.0.4191.52 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:*before 152.0.4191.53VulnerableMicrosoft
  • cpe:2.3:a:microsoft:edge_chromium:*:*:*:*:-:*:*:* Versions before 152.0.4191.53 Vulnerable ·Microsoft

Remediation

  • Fix · CNA Microsoft Edge (Chromium-based) (Microsoft) Fixed in 152.0.4191.53
  • Fix · CNA Microsoft Edge for Android (Microsoft) Fixed in 152.0.4191.52
  • Fix · CNA Microsoft Edge for iOS (Microsoft) Fixed in 152.0.4191.52
  • Fix · CNA Microsoft Edge for Linux (Microsoft) Fixed in 152.0.4191.52
  • Fix · CNA Microsoft Edge for MAC (Microsoft) Fixed in 152.0.4191.52
  • Fix · CNA Microsoft Edge for Windows (Microsoft) Fixed in 152.0.4191.52

Vendor assessments

Microsoft

Microsoft's page for this CVE →

Impact
Information Disclosure
Exploited
No
Publicly disclosed
No
Exploitability
Exploitation Unlikely
ProductStatusPlan or fix
6AffectedNo update listed
Microsoft Edge for AndroidFixed 152.0.4191.52 · Security Update
Microsoft Edge for LinuxFixed 152.0.4191.52 · Security Update
Microsoft Edge for MACFixed 152.0.4191.52 · Security Update
Microsoft Edge for WindowsFixed 152.0.4191.52 · Security Update
Microsoft Edge for iOSFixed 152.0.4191.52 · Security Update

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-58616
  2. 2026-10-03 Alias added: GHSA-c7hh-86mm-w7m5
  3. 2026-10-28 Fix available: Microsoft/Microsoft Edge (Chromium-based)@152.0.4191.53 · CNA

References

Patch 1

  • TI-2023-05824 Integer overflow in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2022-03781 Out-of-bounds write in Google Chrome KEVCVSS 3.1CRITICAL 9.6
  • TI-2025-12953 Memory corruption in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2025-04867 Out-of-bounds read in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2024-07384 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
  • TI-2023-04799 Out-of-bounds write in Google Chrome KEVCVSS 3.1HIGH 8.8
See all 325 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences